Phenakite and Afghanite Physical Properties

Phenakite

Afghanite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

2.90-2.98

Conchoidal, ConchoidalWalter Schumann

Distinct on {11 2 0}, imperfect on {10 1 1}

7.5-8

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

2.55-2.65

Conchoidal

Perfect {10 1 0}

5.5-6

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Phenakite and Afghanite Chemical Formula

While comparing Phenakite and Afghanite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Phenakite and Afghanite chemical formula.

Compare Colorless Gems

Phenakite Vs Orthoclase

Phenakite Vs Oligoclase

Phenakite Vs Muscovite

Phenakite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite Vs Afghanite during the identification of gemstone. Specific gravity of Phenakite is whereas that of Afghanite is .